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B. B. BIGNALL 8c R. A. MARSH. SEGTIONAL JACKET DRIVE WELL POINT.

No. 380,419. PatentedApr. 3, 1888.

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W/TA/ESSES: fr 6 fllfl/VEIVTOHS. a @M M M UNITED STATES PATENT rricn.

BURNETT l3. BIGNALL AND ROBERT A. MARSH, OF ST. CHARLES, ILLINOIS, ASSIGNORS TO VIOLA S. BIGNALL, OF SAME PLACE.

SECTIONAL JACKET $PECIFICATION forming part of Letters Patent No. 380,419, dated April 3, 1888.

Application filed January 10, 1887.

To all whom it may concern.-

Be it known that we, BURNETT B. BIGNALL and ROBERT A. Manse, citizens of the United States, and residents of St. Charles, county of Kane, and State of Illinois, have invented new and useful Improvements in Sectional Jacket Drive-\Vell Points, of which the following is a specification, reference being had to the accompanying drawings, illustrating the inven tion, in which Figure I is a broken elevation of a drivewell point in which our invention is embodied; Fig. II, a vertical sectional elevation of the straining portion of the point, taken on line Z, Fig. III; Fig. III, a horizontal section of Fig. I on line at; Fig. IV, a section on line 3 Fig. I.

This invention relates to improvements in points which are used in connection with pipe to make what is known as the drive-well. In practice these points must be strong enough to withstand the power to put them into the earth and have sufficient straining area and water-conduit. Toembodytheseessential features in asmallpipeto avoid frictionin driving is the purpose of this invention. Drive-well pointsin use consist of about two feet of perforated pipe attached to a suitable point and upper pipe; and it has been the custom to cover the perforations with patches of gauze-wire cloth and then cover the whole with a stronger perforated jacket to protect the wire-cloth; or the perforated point has been first covered with wire-cloth and the cloth covered with a strong perforated jacket soldered to the perforated point'in places. The objection to the jacket is that it is often torn loosein driving the point down where stone is encountered, permitting the wire-cloth to be torn from over the perforation in the point, so that sand andother extraneous matter are pumped up. It has been the custom, also, to countersink patches of wire-cloth into the margins of holes drilled in wrought pipe, and to hold the patches in place by washers or rings, and in a few instances to secure the patches by solder and then use the ordinary single cylindrical perforated jacket over all the patches. The seats for these wirecloth patches have the form of a parallelo' gram, and cut transversely with the point they Serial No. 223,977. (No model.)

are on cord lines, and as a result, if they are sunk low enough to permit the wire-cloth to lie below the periphery of the point, the point at'the middle of the patches is very much weakened, and at best only small patches of wire-cloth can be employed in this manner.

Our invention differs from these mentioned in that the wire-cloth and sections of perforated jacket-plate are segmental in transverse section or convex, and can have, for this reason, a much larger water-area and resist sufliciently the exteriorpressure, and at the same time the margins around the patches are at all points substantially the same depth for holding solder. These features, taken in connection with the other constructions of the point, render it more serviceable in obtaining water than other patch-points, while it is sufiiciently strong to be driven where any water-conducting point can be put down.

We employ four vertical rows of waterpassages in the point, forming the passages alter nately to each other so near as may be, so as to obtain the greatest strainer-surface consistent with retaining sufficient metal in the point for strength. The point A F G is cast in one piece of malleable iron; but other metal may be employed, and the perforations in it are made in the form each of a quadrilateral. parallelogram rectangle, those on two opposite sides of the point overlapping in vertical height the other two rows on the other sides, as shown, to obtain a suitable straining area.

b b represent the seats surrounding the perforations, E the wire-gauze cloth, and B the jacket-patches. At Figs. III and IV it will be seen that the inner sides of the vertical ribs a between the perforations are wider than at the periphery portion thereof. This is to give such strength to the parts that the point will withstand driving. To protect the sectional jacket parts B from injury in stony soil wedge-shaped deflections C are formed below each opening to move the stone outward for the jacketsections B to pass by. The swell on the point part F will protect the lower parts, but the stone will close up, and further protection is required for the upper parts.

f shows the line of solder for holding the strainers in place.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. The hollow part A G and point F, cast in one piece, and the part A provided with two or more vertical rows of elongated square-cornered holes, and the margins of the holes provided with recessed seats b b, on which patches of wire-gauze, E, are placed and covered with perforated sectional jackets B, to lie below the surface of the part A, and the gauze and jackets secured by solder, f, uniting the jackets with the margins of the holes E, as specified.

2. The hollow part A, having formed therein one or more vertical rows of openings which 15 are covered with inner gauze-wire cloth, E, and sections of a jacket, 13, in combination with the Wedge shaped projections 0 below the jacket parts, as specified.

BURNETT B. BIGN ALL. ROBERT A. MARSH.

\Vitnesses:

G. L. CHAPIN, ANNA D. J OHNSON. 

